The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 9 |
| 5 | 15 |
| 6 | 25 |
| 7 | 41 |
| 8 | 64 |
| 9 | 96 |
| 10 | 142 |
| 11 | 207 |
| 12 | 295 |
| 13 | 416 |
| 14 | 578 |
| 15 | 795 |
| 16 | 1081 |
| 17 | 1458 |
| 18 | 1948 |
| 19 | 2583 |
| 20 | 3400 |
| 21 | 4445 |
| 22 | 5774 |
| 23 | 7457 |
| 24 | 9576 |
| 25 | 12234 |
| 26 | 15554 |
| 27 | 19683 |
| 28 | 24798 |
| 29 | 31113 |
| 30 | 38882 |
| 31 | 48409 |
| 32 | 60055 |
| 33 | 74248 |
| 34 | 91494 |
| 35 | 112395 |
| 36 | 137656 |
| 37 | 168110 |
| 38 | 204735 |
| 39 | 248677 |
| 40 | 301278 |
| 41 | 364107 |
[1,2,4,9,15,25,41,64,96,142,207,295,416,578,795, 1081,1458,1948,2583,3400,4445,5774,7457,9576, 12234,15554,19683,24798,31113,38882,48409,60055, 74248,91494,112395,137656,168110,204735,248677, 301278,364107] |